40 



Records of the S.A. Museum 



Fins. Dorsal a little variable in position, commencing either on the posterior 

 body-ring, or wholly situate on the tail : median ridge terminating above the vent 

 and well se[3arated from tiie lower caudal edge wdiich is continuous with that of 

 the trunk ; dorsal edge of the trunk terminating below the hinder part of the dor- 

 sal fin, that of the tail cur\ing downward to above the end of the median lateral 

 ridge : \entral surface a little wider than that of the dorsal : caudal fin rounded, 

 longer than the eye, but shorter than the snout. 



CoJour-markinys. The markings vary in intensity in different specimens, 

 but are similarly arranged in all. An adult male is brown, with slightly darker 

 cross-bars on the back : light oval spots encircle the lateral ridge on each body ring, 

 and also the junctions of the. rings : large dark sjjots are present on the lower half 

 of each segment of the trunk. I lead with a broad cross-band on the occiput and 

 another between the eyes ; tail and egg-pouch variegated with brown reticulating 

 lines: lower surfaces with irregular brown bars radiating from the eye, and 

 enclosing white interspaces. 



T~>escribed from two males and two females, 125-164 nim. long, the largest of 

 which is figured. 



Loc. Ivangaroo Island, South .\ustralia. Coll. W'aite, 1917. 



ICHTHYOCAMPUS CRISTATUS sp. nov. 



¥\^. 26. 



D.26: P.12: C.8 : annuli iQ-40: subdorsal annuli i, 5. 



Head 3-6 in its distance from the vent, and 13 '3 in the total length: trunk 

 I -8 in the tail : snout 3 4 in the head, much shorter than the postorbital portion of 

 the head: eye i '3 in the snout, and 4 7 in the head: ])ectoral about as long as the 

 eve : caudal a little shorter than the snotit. 



'mxiXXAlAAllA (1 '^■'^rrl-rH< 



tO"^- 



Fig. 26. Ichthyocmnpits cnstatiis. 



Head and liod)- uniformly granular: snout with an ele\ated, obtuse crest, 

 wdiich expands posteriorly to join the orbits: interorbital space fiat, with a very 

 low median ridge which is subcontinuous with an indefinite nuchal ridge :. occiput 

 and nape slightly elevated : low ridges extend backward on each side of the head 

 from the orbits: opercles with a low, median ridge, and granular radiating striae. 



