PLATE XII. 



1-3. ErICHTHOIDINA. 4. LySIOERICHTHUS. 5. GONEEICHTHUS. 6. PSEUDERICHTHUS. 



Fig. 1. Erichthoidina {LysiosquUla f), from Honolulu. Zeiss, A, 2. 



Fig. 2. Older stage of same. 



Fig. 3. Erichthoidina (Gonodactylus ?), from St. Vincent, Cape Verde. Zeiss, A, 2. 



Fig. 4. LysiosquUla (Lysioenchthus) minutus, from St. Vincent, Cape Verde. Stage No. 1 ; 

 4 '16 mm. long. 



Fig. 5. Gonodactyhis (Gcmerichthus), from St. Vincent, Cape Verd. Zeiss, A, 2. 



Fig. 6. PseudosquiUa {Pseuderichthus), 1'14 inches long, collected between Tenerife and 

 St. Thomas. 



