20 



suriiila. The oblileralion ol' (he intlividiialily of the teclh is much hi-lU-r marked 

 in Ideoroncus laminatus n. sp. (Pi. I, lig. 5 a, a) than in the jusl menlioned species; 

 for the Ibrmer has the basal looth very broad, apparently consisting of several 

 fused ones, and the following teeth so little marked, that it is possible to distinguish 

 between a plate-shaped proximal portion in contrast to a short serruli-formed one, 

 consisting of about 6 teeth, in addition to a long terminal spine, placed on a lower 

 level (fig. 5 a, /). 



The serrula or lamina interior of the Garypidae Hans, provides interesting 

 modifications, as it sometimes bears similarity to that of Ideoroncus Balz, and 

 sometimes to that of Chelifer Geof. ; Ihe species, which, in this respect at least, 

 show the most pronounced similarity to Ideoroncus laminaliis n. sp. for insl. are 

 (iarypus Floridensis Bks. and G. saxicola Wath. The lamina is in the former of 

 these species an elongated narrow organ, which is connected with the finger in 

 its whole length, and by transverse lines divided into about 2.^1 divisions or "teeth" 

 with the distal portion partly free and squarely truncate; terminally we observe 

 three or four more free and indistinctly serrated lobes in addition to the rather 

 slender sjiine, which is placed on a higher level than the lamina proper and 

 indistinctly serrated interiorly (PI. II. fig. 4 a). A similar structure, but shorter with 

 broader teeth, is usual in many forms, for inst. in Garypns lonyidiyiUdiis Hainh. 

 (PI. II, fig. 3 a), in which only a short plate-shaped portion, probably consisting 

 of two fused teeth, is present, while the greater portion of the organ is divided 

 into broad, squarely truncate and marginally dentated lobes, numbering about 

 twelve; the two terminal lobes are partly free like the slender spine, which is 

 placed on a higher level and without marginal teeth. A similar structure is found 

 in Olpiiim sp. from Queensland, but with the terminal spine more clumsy and 

 serrated, and so it is in Garypinns sp. from Hawaii and G. irruyalus Sim. (PI. FI, 

 fig. 1 b), but in these the plate-shaped portion (r/') is comparatively more developed 

 than in Garypus longidiyitatns Rainb. Olpium Birmaniciim n. sp. has the basal 

 portion well developed, distinctly plate-shaped and with distinct transverse lines, 

 and the distal serruli-formed one well set off, consisting of four dentated lobes, in 

 addition to a short serrated terminal spine (PI. II, fig. 7 c); Olpium cordinianuni Balz, 

 has a broad indistinctly divided plate-shaped portion, not well separated from the 

 serruli-formed one, which consists of three broad dentated lobes, the one covering 

 the front margin of the preceding one, in addition to a very long, slender terminal 

 spine without any marginal teeth, but placed on a higher level (PI. II, fig. 6 a). 

 The serrula of this form provides great similarity to that of Chelifer Geof. especially 

 on account of the sharp distinction between the plate-shaped and serruli-formed 

 portions. The lamina of Garypinns nobilis n. sp. (PI. II, fig. 8 b) is remarkable on 

 account of the exceedingly broad plate-shaped portion with distinct transverse lines, 

 well limited from the serruli-formed one, which consists of about three well 

 developed simple teeth and a short terminal spine. Olpium furciliferum Balz. (49. 

 tab. V, tig. 3 b) has a lamina interior, which „has become narrower than in Chelifer, 



