90 



structure is found in Olpiiim crassichelatiim Balz., t)ul tiio cucullus is in lliis well 



limited behind (fig. 13, p. 89). The cucullus is in Olpium cordimanum Balz, graduallj' 



merging into hinder portion of the head, but is fairly long, as the front pair of 



eyes is removed from the front margin a distance, which is distinctly longer than 



their diameter; a rather deep median incision is found, hi Garypiinis n. sp. from 



Funafuti (fig. 14) the cucullus is fairly well set off behind, distinctly produced in 



front, and with the median incision so deep, thai the front margin 



appears bilobate; this cucullus is directed downwards in a slight 



degree similar to that of Garypus L. K. (PI. II, fig. 1 a). The cucullus 



of Garijpas L. K. f. inst. of G. irriigatus Sim. is fairly well marked 



olT behind, as the outline of the céphalothorax is just behind and 



beneath the eyes, which are placed a little away from the side 



on a marked transverse elevation, facing forwards and backwards 



Fig. 14. respectively besides outwards, rather suddenly concave and again 



Gaifipinus n. sp. convex shortly behind front margin. The eyes are removed from 



rom iinaiiti. jj^^ front margin a distance which is three or four times equal 



ceplialothora.x; . ,. i ,• • • ii- . 



^ 53 to then- diameter; the iront margui itselt has no marginal part 



marked out and is provided with a shallow or deep incision 

 sometimes prolonged into a longitudinal groove backwards, which is extended to 

 near the middle of the cucullus. The eyes are placed on a transverse elevation of 

 the head, which consequent!}' slopes both backwards and forwards towards the 

 front margin ; the cucullus thus gets a direction forwards and downwards. 



The relation between the length and the breadth of the céphalothorax is not 

 without connection with the shape; in forms in which the head is produced to a 

 long cucullus as in most forms of Garypus L. K. and in Garypiniis n. sp. from 

 Funafuti, the hindmost margin is as a rule as broad as or broader than the 

 céphalothorax is long (PI. II, fig. la; fig. 14); Garypus Floridensis Bks. and G. saxi- 

 cola Wath. form exceptions to this rule. In almost all species of Garypinus Dad. 

 and Olpium L. K. however we have the céphalothorax longer than wide behind 

 f. inst. in Garypinus nobilis n. sp. (PI. II, fig. 8 a) and Olpium Birmanicum n. sp.; in 

 01. Ortonedae Ell. it is even almost twice the length. In most forms at least the 

 hindmost margin is broader than the céphalothorax in front; but Olpium n. sp. 

 from Queensland is broadest in the middle and here as broad as the céphalothorax 

 is long (fig. 12, p. 89). It seems to be a generally accepted view, that Garypus L. K. 

 has the céphalothorax divided by a transverse line, while Olpium L. K. has none; 

 this opinion is far from being right. Some species of Garypus L. K. like G. latus 

 Hans, have two distinct sutures; some have the foremost fairly well developed and 

 the hindmost obsolete like G. minor L. K., while others have the hindmost the 

 most distinct and the foremost more or less obsolete like G. saxicola Wath. and 

 G. Floridensis Bks. ; but most forms seem to have both transverse sutures more or 

 less obsolete L inst. G. personatus Sim., G. irrugatus Sim. and G. longidiyitalus Rainh. 

 Garypinus Patagonicus Ell. and G. diniidialus L. K. have the hindmost transverse 



