246 Part III. — Twelfth Annual Report 



marginal and one apical plumose hair, and is provided with a 

 nearly obsolete subterminal second joint supporting three plumose setae 

 (fig. 25, PL VI.). The joints of the posterior foot-jaws are comparatively 

 elongate and narrow. The terminal claw is strong, and slightly curved 

 (fig. 26, PI. VI.). The two-jointed inner branches of the first pair of 

 thoracic feet are stout, and armed with a powerful terminal claw. The 

 outer branches are small and three-jointed, and only extend to about the 

 middle of the elongate first joint of the inner branches (fig. 27, PL VI.). 

 The second, third, and fourth pairs are slender. The inner branches are 

 short and two-jointed, with the first joint small. Both branches are 

 furnished with long plumose setae (fig. 28, PL VL). The structure of the 

 fifth pair is similar to those of Laojphonte thoracica, Boeck ; but the 

 secondary joint is broader, the breadth being equal to about twofifths, 

 of the length, and with the distal half sub-conical in outline (fig-. 30 

 PL VI.). Caudal stylets short, about equal to half the length of the 

 last abdominal segment. 



Male. — In the male the fourth joint of the anterior antennae is 

 dilated and sub-rotund. The terminal joints are narrow, and form a claw- 

 like appendage ; and, being hinged to the large fourth joint, constitute 

 an efficient grasping organ (fig. 2, PL VII.). The third pair of thoracic 

 feet are moderately stout ; the inner branches appear to consist of three 

 sub-equal joints that reach to about the end of the second joint of the 

 outer brauches. An irregularly-curved spiniform appendage, extending 

 considerably beyond the apex of the last joint, springs from the end of 

 the second joint, as shown in the figure (fig. 29, PL VL). The basal 

 joints of the fifth pair are not produced exteriorly, but the anterior 

 angle is furnished with two plumose setae. The secondary joint is shorter 

 than that of the female fifth feet, and there is proximally a lobe-like 

 marginal process, furnished with a terminal plumose seta. On the conical 

 end of the secondary joint there are two stout setae on the inner and two 

 on the outer margin, and an elongate apical seta. The sixth appendage 

 is small, narrow, and provided with three terminal plumose setae (figs. 

 31, PL VL). 



Habitat. — Off St Monans and also off Musselburgh. Rather scarce. 



Remarks. — This species resembles Laophonte thoracica, Boeck, in some 

 of its characters, as, for example, in the form of the thoracic feet ; but 

 the structure of the anterior antennae and posterior foot-jaws, and the 

 short caudal stylets, distinguish it at a glance from that species. 



Laophonte denticornis, sp. n. (PL VII. figs. 13-23.) 



Description. — Female. Length, *86 mm. (^fch of an inch). Body seen 

 from above, slender, sub-cylindrical ; the first cephalo- thoracic segment 

 nearly equal to the combined length of the next four. The postero-lateral 

 angles of the second, third, and fourth abdominal segments are slightly 

 produced and rounded ; while the third and fourth segments are proxi- 

 mally narrower than they are distally. Forehead sub-triangular. An- 

 terior antennae six-jointed, stout, sparingly setiferous, and about equal in 

 length to the first cephalo-thoracic segment. The first three joints are 

 of moderate length and sub-equal, the fourth and fifth are small. The 

 second joint is armed on the under side with a stout conical tooth nearly 

 at right angles to the joint (fig, 14). The proportional lengths of the 

 joints are shown by the formula : — 



18 . 16 . 15 ■ 5 • 3 • 11 • 



The fourth joint is produced on the upper side to form the base of a 

 moderately long filament. The basal joint of the posterior antennae is 



