ERGINUS. 565 
to the last-named series (similar in this respect to the two above-named species); with a third inferior 
external row of tubercles becoming longer towards the apex; also a dorsal external and two dorsal series 
of distinct separate tubercles; all these rows extending from the base to near the apex of the femur. 
Trochanter iii. has a longer apical spur than in allied forms, being absent in E. arcuatus. 
Colour. Body very pale grey-olive-green ; legs, especially the posteriors, paler. The dorsal scutum is entirely 
devoid of yellow spots and lines, except that the central posterior margin of the third segment is outlined 
in yellow, and is sometimes continued to the extreme margin of the body. 
Hab. Guatemaa, Cahabon (Sarg). 
11. Erginus serratipes, sp.n. (Tab. LIII. figg. 5, 5a, 3.) 
Type ¢, gynetype 2, in coll. Godman & Salvin. Total length, ¢ & 9, 6 millim. (excl. mand.). 
od. General characters similar to those of H. pectinigerus. Tarsal segments, i. 6; 11. 13; ili. 8; iv. 8. 
Mandible: basal segment granulose ; movable digit about half the length of the dilate apical segment, 
with a large basal tooth and a finely serrate inconspicuous carina apically ; fixed digit with a stout 
triangular tooth in the apical half. 
Legs similar to those of E. pectinigerus, except that femur iv. is quite differently denticled (the character 
of these denticles being characteristic of the various species). Femur iv. with an internal serratiform 
series of 15 denticles, basally coalescent and as long as the diameter of the segment, and with one or 
two separate apical denticles, the series occupying nearly the whole length of the femur; also a dorsal 
series of 11 shorter denticles, less than the diameter of the segment, and not basally coalescent (or 
sometimes one or two pairs); the external side is furnished with rows of tubercles, one series nearer the 
dorsal ridge being larger, dentiform ; there is no inferior external series of denticles. 
Colour. Body and legs pale olive-grey. Prosoma limited posteriorly by a central semicircular yellow line, 
with also a lateral spot on each side. The dorsal scutum has a broken central line, while the segments 
1-4 are outlined laterally with curved yellow lines, forming a broken scallop-pattern, similar to, but less 
distinct than, that of Z. pectinigerus. The scallop limiting the third segment laterally is connected with 
the body-margin by a short yellow line. 
Q. Similar to the ¢, except that femur iv. is simple. 
Hab. Guatemana, Tikal (Sarg). 
12. Erginus triangularis, sp. n. (Tab. LIII. figg. 6, 6a, 6, 3.) 
Type, ¢, in coll. Godman & Salvin. Total length 6°5 millim. (excl. mand.); femur iv. 7°25 millim. 
General characters as in the allied forms, but the chief difference lies in the fact that the widest part of the 
dorsal scutum lies behind the middle, whereas in all the others here described it lies in front of the middle 
transverse line drawn across the opisthosomatic area of the fused segments. Eye-tumulus without 
warts ; eyes much closer together ; tumulus not twice, about one-third, longer than broad. Tarsal segments, 
i. 6, the three basals very slightly dilate; ii? (absent); ili. 8; iv. 9. Legs generally similar to those of 
the other species described. 
Femur iv. long, basally slender, apically dilate, with several rows of cusp-like warts, a more conspicuous 
series lying on the inner apical dorsal line ; and a long series of minute warts on the inferior internal 
margin, with another on the apical half of the inferior external margin, consisting of stout, very 
closely situated denticles, their bases being broad and set transversely. 
Colour. Body ochre-brown ; legs pale olive-grey. The whole dorsal area, including the: prosoma, is widely 
with a filigreed band of yellow. Segments 1, 2, and 3 are limited by indistinct marginal 
margined 
1 and 2 have each a pair of yellow dots on each side on the disc. The free segments are not 
scallops ; 
marked with yellow. 
Hab. Guatemata, Tecpan (Stol/). 
