CLASS ARACHNIDA 
ORDER-—ADELARTHROSOMATA’ Westw. 
Famity—CYPHOPHTHALMID. 
This family, hitherto composed of a single genus, Cyphophthalmus, founded upon a single species, C. duri- 
cornis, inhabiting the caves of Carniola, was proposed by Herr Joseph in the Berlin Entomologische Zeitung, 
vol. xii, p. 241 and p. 269, pl. i. It is nearly allied to Phalangium. 
A second species of the group was forwarded to me by Herr Snellen van Vollenhoven, from the Royal Museum 
of Leyden, as a native of Sumatra, and as a species of Trogulus. As it differs in several respects from the type 
of the family, I have formed it into the 
Grinus—STYLOCELLUS, 
(Prats XXXVII, Fies. 7, 7 a, corpus infra visum ; fig. 7}, idem e latere.) 
Cephalothorax dorso integro, absque impressione semicirculari dorsali; lateribus in cornua duo brevia por- 
recta, apice ocelligero; chelicere palpis breviores, articulo basali dimidium articuli cheliferi longitudine «quanti ; 
chele simplices nec serrate: spiracula ad basin abdominis rotundata nec lunata; pedes 8, fere zquales, tibiis 
biarticulatis, tarsis biarticulatis, articulo basali brevi, secundo multo longiori crassiori subtus fisso, ungue unico 
terminali instructo (fig. 7); pedes antici modice elongati absque spina ad angulum internum articuli basalis ; 
abdomen ovale convexum e segmentis septem coalitis, formatum. 
Specres 1—STYLOCELLUS SUMATRANUS. 
Prats XXXVII, Fie. ‘7. 
Convexus totus purpurascenti-piceus, opacus, undique granulis minutissimis crebrissimis indutus, haud 
setosus, 
Long. corp. lin. 34. 
Habitat; Sumatra. In Mus. Reg. Lugdun. et in Mus. Hopeiano Oxoniz. 
I have seen a closely-allied species of a ferruginous colour from Java in the collection of the British 
Museum. 
* Forty years ago I proposed this term for those Trachearian Arachnida which have the ‘abdomen annulated, 
although occasionally in an indistinct manner,’ the other orders of Arachnida being named by Dr. Leach—1. Dimeroso- 
mata (spiders) ; 2. Polymerosomata (scorpions) ; 3. Monomerosomata (mites) ; and 4. Podosomata (Pyconogonum and 
Nymphon). The term Arthrogastra has recently been applied to my Adelarthrosomata, to which, notwithstanding their 
different mode of respiration, the scorpions have been unsatisfactorily added. 
