WILLIAMS AND BABA: SQUAT LOBSTERS FROM THE PACIFIC OCEAN 



Figure 4. — Munidopsis Ugnaria, holotype o , USNM 240202: a, carapace and parts of anterior appendages, ab- 

 dominal segments 2-4 in folded position, dorsal; b, cephalothorax and parts of anterior appendages, lateral; c, merus 

 of right thii'd maxilliped and parts of adjacent articles; rf, sternites at base of maxillipeds and chelipeds; e, right 

 cheliped, and views of fingers; /, dorsal; g, ventral. Scales: l(c, rf), 3(/', g) = I mm, 2(a, b. e, h) = 3 mm. 



cervical grooves apparent, transverse depres- 

 sion in anterior part of cardiac region. Rostrum 

 narrowly triangular, tip exceeding eyestalks by 

 their own or slightly greater length; horizontal 

 dorsal surface nearly smooth, with low but dis- 

 tinct carina becoming obsolescent between 

 prominent gastric spines. Frontal margin with 



acuminate, slightly hooked antennal spine lateral 

 to eyestalk followed by concavity ending in 

 small, acute anterolateral angle. Gastric region 

 bearing short setose rugosities arranged in more 

 or less concentric arcs behind strong gastric 

 spine at either side of midline (reduced second- 

 ary gastric spine lateral to each in large indi- 



905 



