235 
No axillary porus. First branchial arch with a membrane along 
its innerside and with 11 gillrakers on its horizontal branch; 
second and third branchial arch without processes on the sides 
facing each other. Gillmembranes united, free from isthmus. 
Branchiostegals 7. 
Fig. 94. Porochilus obbesi M. Web. 
1. Porochilus obbesi M. Web. 
Porochilus Obbesi Max Weber, Nova Guinea IX. livr. IV 1913. p. 523. 
Boy ww? 1 4-7 Caudodorsal ---C..+- A. = 112; A. etrca 80; 
P. 1. 7—8; V. 11—12. | 
Height about 5'/,, head 6'/,. Dorsal profile sloping down in 
a straight line from dorsal to snout, posterior profile of back 
slightly convex. Eye 4, a little shorter than snout, in second 
"1, of head. Nasal barbels about as long as head, mandibulary 
barbels extend on pectorals, mental ones '/, shorter than 
mandibulary ones, maxillary barbels 
the shortest of all. Dorsal as long as 
head without snout; its spine nearly 
equalling postorbital part of head. 
Ventrals rounded, as long as dorsal 
spine, reaching anal, the height of 
which is '/, less than length of head, 
pectorals */, of head, reaching base of 
ventrals, in males a little longer. Colour 
Fig. 95. Porochilus obbesi. 
X 3- Anterior part of head, |, ; 
seen from below; # anterior lighter or darker brown, mottled with 
nostril, perforating the upper- jrreoular darker patches. A large dark 
lip, m« maxillary, md mandi- beh 7 ; 1 4 he 
bulary, 7 mental barbel; o eye. SPOt be 1ind the operculum, where the 
airbladder lies close under the skin 
which is a more or less protruding. Length about 120 mm. 
Habitat: South New Guinea (Lorentz river!). 
